Located in the Great Rift Valley of Tanzania's northern Arusha region, thanks to its concentration of natron (sodium carbonate), this shallow lake turns animals to stone - well, more accurately, kills and almost perfectly preserves them. You see, its waters are extremely hot, alkaline, and caustic - approaching the level of ammonia. Even so, you will see birds around here, most notably flamingoes. An unforgettable sight, for sure - but of course, just look and don't swim!

Read more in Tripatini contributor Megan Sashyl´s post 15 of the World´s Lesser Known Travel Wonders.